// Copyright (c) 2013-2014 Sandstorm Development Group, Inc. and contributors
// Licensed under the MIT License:
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// THE SOFTWARE.

package org.capnproto;

public final class ReaderOptions {
    /**
       How many words are allowed to be read before an exception is thrown,
       to protect against denial of service attacks.

       -1 means "no limit".
    */
    public final long traversalLimitInWords;

    /**
       How many pointer indirections deep a message may be before an exception
       is thrown.
    */
    public final int nestingLimit;

    public ReaderOptions(long traversalLimitInWords, int nestingLimit) {
        this.traversalLimitInWords = traversalLimitInWords;
        this.nestingLimit = nestingLimit;
    }

    final static long DEFAULT_TRAVERSAL_LIMIT_IN_WORDS = 8 * 1024 * 1024;
    final static int DEFAULT_NESTING_LIMIT = 64;

    public static final ReaderOptions DEFAULT_READER_OPTIONS =
        new ReaderOptions(DEFAULT_TRAVERSAL_LIMIT_IN_WORDS, DEFAULT_NESTING_LIMIT);

}
